Double reduction-gearing.



J. A. mms, DOUBLE aEnucnN-.GE/Rlmn APPLICATION FILED APR. 4. 19l6.

1,293,043.'A l Patented'Feb. 4, 19119.

Hls ATTORNEY 1N FACT` UNTED STATES PATENT OFFICE.

JAMES A. DAVIES, 0F SWISSVALE, PENNSYLVANIA,

ASSIGNOR, BY MESNE ASSIGN- MENTS, '.lO WESTINGHOUSE GEAR AND DYNAMOMETER COMPANY, OF EAST PITTS- BUBGH, PENNSYLVANIA, A. CORPORATION OF PENNSYLVAN DOUBLE REDUCTION-GEARING.

Specification of Letters Patent.

Patented Feb. 4, 1919.

application med pril 4, 191e. serial no. 88,847.

To all whom it may concern: Be it known that I, JAMES A. Da vms, asubject ofthe King of Great Britainand Ireland, and a resident of Swissvale, in the.

ing and has for an object to produce a gearing ca able of transmitting large powerwhich is o simple construction and occupies less space than gears now in use and known to me having the same ratio of reduction and capable of transmitting substantially the same power. j

A further object is to produce a double reduction gearing which is cheap to bulld, is more easily assembled and in which the parts are more accessible than in slmllar gears now in use and known to me.

These and other objects, which will be made apparent throughout the further delscription of the invention, are attained by means of gearing embodying the features herein described and illustrated.

In the drawings accompanying and form ing a part hereof, Figure 1 vis a plan View of a reduction gearing embodylng my 1nvention, the bearing bemg shown 1n section for convenience of illustration.

Fig.. 2 is a sectional view along the line 2-2 of Fig. 1, and is illustrated in connection with the cover for the gear casing, which cover is not shown in Fig. 1.

f Fig. 3 is a fragmental sectional view along the line 3-3 ofFig. 2 and illustrates a bearing construction forming a detail of the invention.

The apparatus illustrated includes a pinion 4, provided with two sets of oppositely inclined spur teeth 5. The pinion is journaled in bearings 6 and 7, which are mounted ona frame 8. This frame is so constructed that it forms the lower portion of a casing forthe gears. The pinion meshes with a gear 9, which is also shown provided with two sets of oppositely inclined spur teeth. The gear 9 is rigidly mounted on a Y meshes with the are `mounted on the frame 8. A gear 16 plnion 11 andis mounted on a shaft 17. The gear 16 may be formed 1n two parts 18 and 19, as illustrated, each mounted on the shaft 17 and each meshing wlth one set ofv the gear. teeth 11 of -the pinlon 12. The bearings 20 and 21, which are mounted on the frame 8.

With this arrangement the mounting.

shafts of all the gears are parallel and are journaled in a single frame. While there are seven bearings, they are so arranged that they may be bored with but three settings o f the boring machine. One of the principal features of the invention is that the plnlon 12 andi the gear 9 are mounted on the same shaft. This avoids the necessity of employlng a coupling between the pinion and the gear and also avoids .the necessityr of alining the two, since the borings qt the bearings 13, 14 and 15, in a single operation, insures their correct alinement.

The bearings employed in the gearing shaft 17 is journaled ii 6gillustrated are similar to the bearings shown y in Fig. 3. Each bearing sleeve is formed in two semi-cylindrical portions 22 and 23. The lower portion 23 is supported, at each end, by the frame 8, and is provided intermediate its-ends with a positioning flange 24 which projects downwardly between the two supporting pads 25 (Fig. 3) formed on the frame. The flange 24 terminates at each side of the portion 23 in a flat radial face which is flush with the radial face of the portion 23. The flange is also extended o? each side of the portion 23 to ferm laterali projecting lugs which are engaged by a cover portion 26, adapted to be secured to the frame 8. With this arrangement each half bearing sleeve is held securely in place and is prevented from turning. The top portion of each bearing box is formed inteally with a cover 26, and is provided with earing pads similar to the bearing pads 25 of the frame 8. With this arrangement all ofthe bearing sleeves are held securely in place when the cover 26 is bolted in place on the frame 8. t The frame' 8 and consequently the cover 26 are respectively provided with partitions 27 and 28. The bearings 6, 14 and 20 are mounted on the partition 27, and the partition 28 coperates with it in holding the bearing sleeves in place and in forming oil chambers for each bearing.

As illustrated, the frame 8 is provided with three lubricant delivery passages, 29, 29 and 29, each of which extends across ythe frame portion and comlnunicates with the bearings boxes formed integrally within the frame and the cover. The passage 29a communicates with the bearings 15 and 21; the passage 291 communicates with the bearings 6, 14 and 20, and the passage 29 coulmunicates with the bearings 7 and 13. As

illustrated in Figs. 2 and 3, each bearing each bearing, I provide each of the lubri-v cant passages 29 with an indicator which visibly discloses the fact that a suiiieient quantity of lubricant is delivered to the passage to fill the4 lubricant chambers communicating with it. As shown in Fig. 2, each indicator comprises a sight feed 33,`which receives lubricant from the top of one of the lubricant chambers through a pipe 34 and delivers lubricant back to the d frame 8 through a pipe 35. The lubricant delivered by the pipe 35 finds its way into the bottom of the frame and is eventually drained oif through the feed 33 may be provided with a shut-olf valve 36 so as to prevent a constant dripping of oil.

While I have referred to the members 4 and l2 as pinions, this has been done merely for convenience of description and with no intention of limiting the scope of the invention. It will also be apparent to those skilled in the art that each gear illustrated may t be provided with a single t set of straightgear teeth, or with any number of sets of teeth of any configuration without departing from the spirit-"and scope of the invention. It will also b e apparent that various changes, both in the details of con- Y struction and the location of the various elements may be made without departing from the spirit and scope of the invention as set forth by the appended claims.

What I claim is: l 1. In a reduction gearing, a pinion, a gear meshing` therewith, a second pinion ymounted on the shaft of said gear, a second gear meshing with the second pinion, and a frame on whlch said pinions and gears port 30. If desired, the sight are journaled and having an intermediate wall for supporting an intermedlate bearlng between the rst mentioned gear and the second pinion. I

2. In a reduction gearing, a pinion, a gear meshing therewlth, a second pinion mounted on the shaft of said gear, a second gear meshing with the second pinion, a frame, and three alined bearings mounted on said frame for the shaft of said first mentioned gear and said second pinion.

3. In a reduction gearing, a pinion, a gear meshing therewith, a second pinion on the shaft of said gear, a second gear `meshing with said second pinion, a frame, three alined ,bearings for the shaft of the first gear andthe second pinion mounted on said frame and bearings for the first pinion and second gear mounted on said frame.

4. `In a reduction gearing, a pinion adapted to be connected with a driving agent, a gear meshing with said pinion, a second pinion mounted on the shaft of the gear, a second gear meshing with the second pinion, a frame forming the lower portion of a casing for said gears and pinions, and having a partition extending at right angles to the shafts of said gears and pinlons, bearings for said gears and pinions, one bearing for each gear and pinion being mounted on said artition, and a cover adapted to be secure to said frame and to inclose said gears and pinions.

A5. In a reduction gearing, a pinion adapted to be connected with a driving agent, a gear meshing with Said pinion, a second pinion mounted on the shaft of the gear, a second gear meshing with the second pinion, a frame forming the lower portion of a casing for said gears and pinions, and having a partition extending at right angles sov to the shafts of said gears and pinions, bearings for said gears and pinions, one bearing for each gear and pinion bein mounted on said partition, and a cover or the frame adapted to be secured thereto and to coperate therewith in forming bearing boxes for the said bearings.

6. In a reduction gearing, two sets of intermeshing gears, one gear of one set being mounted on the shaft of one gear ofthe other set, a` frame forming the lower portion of a casing for said gears, on which said gears are journaled and having lubricant deliver assages and chambers formed therein for 'delivering lubricant to the journals of said gears, and a cover adapted to be secured to said frame and to inclose said gears, said cover having lubricantchambers formed therein which coperate with the lubricant chambers formed in the frame in inclosing the journals.

7.In a reduction gearing, two sets of intermeshing gears, one gear of one set being mounted on the shaft of one gear of the other set, a horizontally divided casing inclosing the gears and provided with bearing sup orting walls in the lower portion thereo lubrlcant conduits formed in said walls, and

5 lubricant chambers communicating with the lubricant conduits and inclosing each bearmg. 8. In a reduction gearing, a set of intermeshing gears having parallel shafts, a lower casing element provided with gearing su porting Walls each supporting one end o the shafts, detachable bearings seated in the walls, lubricant chambers formed in the Walls around the bearings, an

upper casing element for coperating with the lower casing element for retaining the bearings in a fixed position, lubricant chambers formed in the upper casing element for coperating with the lubricant chambers in` the lower casing element in delivering lubricant to the bearings and lubricant conduits in the walls communicating with the lubricant chambers through which lubricant is supplied to the elements.

In testimony whereof, I have hereunto subscribed my name this 3rd day of April,

JAMES A. DAVIES. 

